EP3061109B1 - Disjoncteur électrique - Google Patents

Disjoncteur électrique Download PDF

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Publication number
EP3061109B1
EP3061109B1 EP14808929.5A EP14808929A EP3061109B1 EP 3061109 B1 EP3061109 B1 EP 3061109B1 EP 14808929 A EP14808929 A EP 14808929A EP 3061109 B1 EP3061109 B1 EP 3061109B1
Authority
EP
European Patent Office
Prior art keywords
latching
spring
circuit breaker
disc
pawl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14808929.5A
Other languages
German (de)
English (en)
Other versions
EP3061109A1 (fr
Inventor
Fabian RÖHRIG
Ralf STUDT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3061109A1 publication Critical patent/EP3061109A1/fr
Application granted granted Critical
Publication of EP3061109B1 publication Critical patent/EP3061109B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3021—Charging means using unidirectional coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/01—Spiral spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3031—Means for locking the spring in a charged state

Definitions

  • the invention relates to electrical circuit breakers having the features according to the preamble of patent claim 1.
  • circuit breakers are sold by Siemens AG under the product names Siemens 3AH and 3AE circuit breakers.
  • the previously known circuit breaker have a spring-loaded drive and a manual-winding device with which the spring-loaded drive can be tensioned.
  • the manual winding device comprises in these prior art circuit breakers a hand crank and a two-stage worm gear.
  • the US4,491,709 discloses the use of a hand-operated spring-loaded drive, wherein a detent disk is used.
  • the invention has for its object to provide an electrical circuit breaker with a manually tensioned spring drive, which has a particularly simple structural design, but still precludes a hazard to operators in the event of malfunction or incorrect operation of the circuit breaker.
  • the invention provides that the manual winding device is a rotatable locking disk, a next to the locking disc, in particular on the end face of the locking disc, arranged latch and a standing in communication with the latch manual actuator for moving the Has latch, the latch is controlled or einêtbar in a latching toothing of the locking disc and move by pressing the actuator, the latch and thereby the locking disc along a predetermined Set rotational direction for tensioning the spring can rotate, and the locking teeth is asymmetrical such that a force transmission from the latch to the locking disc only along the desired direction of rotation is possible and slipping of the locking disc on the latch takes place when the locking disc along the target rotational direction faster than the Pawl turns.
  • a significant advantage of the circuit breaker according to the invention is to be seen in the fact that in this a feedback or feedback on the manual winding device and thus on a hand-lifting device operator is excluded, even if it should come to a malfunction or malfunction of the circuit breaker. Due to the inventively provided asymmetry of the locking teeth ensures that the locking disk can ratchet along the latch when the locking disk rotates faster in the event of malfunction or malfunction of the circuit breaker along the desired direction of rotation than the latch. A power transmission from the latch to the locking disc is thus possible only along the desired direction of rotation, and only if the latch when actuated by the manual winding faster than the locking disc moves, ie during a user-side desired or user-induced tensioning of the spring drive. In the case of a malfunction or incorrect operation of the circuit breaker or in the event that the locking disc - for whatever reason - automatically rotates along the desired direction of rotation, there is no transmission of power between the latch and locking disc, so that an operator can not be compromised.
  • the latching toothing of the latching disc is a circular arc-shaped external toothing.
  • the locking disk can be achieved that the locking disk only cooperates with the latch when the spring of the spring drive by turning the locking disc along the desired direction of rotation is tense. During the relaxation phase of the spring can - be ensured due to the circular arc of the external teeth - that the locking disc is mechanically separated from the latch and a power transmission between these two components is omitted.
  • the circular arc angle has an angle value between (inclusive) 160 ° and (including) 200 °.
  • the locking disc is rotatably connected to a switching shaft of the circuit breaker
  • the spring of the spring accumulator drive forms a closing spring and a first rotation angle range of the switching shaft - when turning along the desired direction of rotation - for tensioning the spring and a second rotation angle range of the switching shaft - when turning along the desired direction of rotation - to relax the spring and to turn on the circuit breaker is used.
  • the circular arc-shaped external toothing of the locking disc and the latching pawl are arranged to each other such that the latching pawl engages or can engage in the circular arc-shaped external toothing, when the switching shaft is in the first rotation angle range.
  • the circular arc-shaped external toothing of the locking disc and the latch are arranged to each other such that the latch is out of engagement with the circular arc-shaped external teeth when the shift shaft is in the second rotation angle range.
  • the manual winding device it is considered advantageous if this has a rocker pivotable about a solid rocker axis on which the latch is pivotally supported about a pivot axis, wherein the pivot axis is parallel to the rocker axis and in the case of Swiveling the rocker about the rocker axis, the pivot axis of the latch is also rotated about the rocker axis.
  • the pivoting range of the latch in the direction of the locking disc is limited by means of a stop.
  • the manual winding device comprises a positioning spring which generates a spring force on the latch in the direction of the locking disk.
  • the spring of the spring drive can be tensioned during rotation of the shift shaft when a spring end of the spring of the spring drive to the shift shaft - is mounted eccentrically with respect to the shaft axis and the axis of rotation of the locking disc and the axis of the switching shaft are identical.
  • the circuit breaker on a backstop, which prevents rotation of the locking disc against the desired direction of rotation.
  • the backstop preferably comprises a toothed wheel, which is arranged coaxially to the locking disk rotationally fixed on the switching shaft of the circuit breaker.
  • FIG. 1 shows a manual winding device 10, which is suitable for clamping a spring-loaded drive 20 of an electrical circuit breaker, not shown in detail.
  • the spring drive 20 includes a spring 21, whose in the FIG. 1 lower spring end 21a by means of a fastening bolt 22 and an eccentric 23 eccentrically mounted on a switching shaft 30 of the circuit breaker. That in the FIG. 1 upper spring end 21b is immovable or fixed to the housing.
  • the spring 21 may be, for example, a switch-on spring whose spring energy is used to switch on the circuit breaker.
  • the lower spring end 21a of the in the FIG. 1 shown position along a target rotational direction S pivoted down by the shift shaft 30 is rotated along the target rotational direction S.
  • the manual winding device 10 To manually enable a tensioning of the spring 20 and a rotation of the switching shaft 30 about the target rotational direction S, the manual winding device 10, a manual actuator 11 in the form of a rod.
  • the actuating device 11 is attached to a first rocker end of a rocker 12, which is pivotable about a rocker axis 13.
  • a pivot axis 14 In the region of a second rocker end of the rocker 12, a pivot axis 14 is arranged, which holds a latch 15 pivotally.
  • the detent pawl 15 is pressed by means of a positioning spring 16 on a circular arc-shaped external toothing 17 of a locking disk 18.
  • a torsion spring 13a serves to rotate the rocker 12 to a predetermined starting position when no manual operation is performed.
  • the pivot axis 14 is preferably parallel to the rocker axis 13, so that in the case of pivoting the rocker 12 about the rocker axis 13, the pivot axis 14, which holds the latch 15 is also rotated about the rocker axis 13.
  • the circular arc-shaped external toothing 17 is asymmetrical, so that a power transmission from the detent pawl 15 to the locking disc 18 only along the target rotational direction S is possible and slipping of the locking disc 18 takes place on the latch 15, when the locking disc 18 along the target rotational direction S faster than the Locking pawl 15 turns.
  • Such a "faster" turning the locking disc 18 relative to the latch 15 may occur, for example, when a in the FIG. 1 not further shown motor drive of the circuit breaker is activated and the spring 21 of the spring drive 20 is additionally tensioned by means of the motor drive.
  • the circular arc angle of the circular arc-shaped external toothing 17 has a value of approximately 180 °.
  • Such a circular arc angle ensures that the detent pawl 15 is engaged with the locking disc 18 only when a tensioning of the spring 21 of the in the FIG. 1 shown unstrained state by rotation of the switching shaft 30 along the target rotational direction S should be made.
  • the spring 21 is in its tensioned state, they - starting from the illustration according to FIG. 1 -
  • the detent pawl 15 loses its engagement with the external toothing 17 or with the locking disc 18, so that the manual winding device 10 is automatically separated from the spring-loaded drive 20.
  • the manual winding device 10 is operated to tension the spring 21 as follows:
  • the manual actuating device 11 is set in an oscillating movement, by which the rocker 12 is pivoted about the rocker axis 13.
  • the pivoting of the rocker 12 about the rocker axis 13 leads to a pivoting of the pivot axis 14 and thus to a movement of the detent pawl 15 tangentially along the external teeth 17 of the locking disk 18.
  • the movement phase in which the latching pawl 15 is moved along the desired direction of rotation S is engage the detent pawl 15 in the outer toothing 17 force-transmitting and rotate the locking disc 18 along the desired direction of rotation S, whereby the shift shaft 30 is rotated about the desired direction of rotation S and the spring 21 is tensioned.
  • the circuit breaker is in accordance with FIG. 1 equipped with a backstop 40 which includes a gear 41.
  • the gear 41 is connected to a not shown latch mechanism in connection, which allows rotation of the gear 41 and thus rotation of the switching shaft 30 exclusively in the desired direction of rotation S and otherwise inhibits.
  • FIG. 2 shows the rotation of the locking disc 18 along the desired direction of rotation S, as soon as the manual actuator 11 is actuated and with this by pivoting the rocker 12, the latch 15 is pushed forward. It can be seen that the spring end 21a has already been moved slightly downwards due to the eccentric attachment to the control shaft 30 by the rotation of the control shaft 30.
  • FIG. 3 shows a further state of the spring drive 20 during the clamping operation in more detail. It can be seen that the latching pawl 15 engages in a central region of the external toothing 17 of the latching disc 18 and the spring 21 of the spring accumulator 20 is thus already half clamped in half.
  • FIG. 4 shows the spring 21 and the spring drive 20 in the fully tensioned state. It can be seen that the latching pawl 15 has reached the last tooth of the circular outer teeth 17 of the locking disc 18 and a further oscillating movement of the manual actuator 11 can cause no further tensioning of the spring 21 and no further rotation of the switching shaft 30 along the desired direction of rotation S. ,
  • the first rotation angle range is in the embodiment according to the FIGS. 1 to 4 defined by the upper position of the spring end 21a of the spring 21 according to FIG. 1 and the lower position of the spring end 21a of the spring 21 according to FIG. 4 ,
  • the second rotation angle range of the shift shaft 30 is between the state according to FIG. 4 and the state according to FIG. 1 when the shift shaft 30 is further rotated along the target rotational direction S.
  • the manual winding device 10 is preferably equipped with a stop 19 which limits the pivotability of the latching pawl 15 about the pivoting axis 14.
  • the stop 19 may be formed for example by a slot 19a and a bolt 19b (see. FIG. 1 ).
  • FIG. 5 shows the circuit breaker according to the FIGS. 1 and 4 again in a different view in the tensioned state of the spring 21. Die FIG. 5 Thus shows the same state of the spring 21 and the spring drive 20 as the FIG. 4 ,

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmission Devices (AREA)
  • Breakers (AREA)

Claims (11)

  1. Disjoncteur électrique, comprenant un entraînement (20) à ressort accumulateur, ayant un ressort (21) et un dispositif (10) d'armement à la main propre à bander manuellement le ressort (21),
    dans lequel
    - le dispositif (10) d'armement à la main a un rochet (18) tournant, un cliquet (15) disposé à côté du rochet (18), notamment du côté frontal du rochet (18), et un dispositif (11) d'actionnement manuel en liaison avec le cliquet (15) pour déplacer le cliquet (15),
    - le cliquet (15) est encliqueté ou peut s'encliqueter dans une denture d'encliquetage du rochet (18) et, par un actionnement du dispositif (11) d'actionnement, le cliquet (15) peut se déplacer et ainsi faire tourner le rochet (18) suivant un sens (S) de rotation prescrit donné à l'avance pour bander le ressort (21) et
    - la denture d'encliquetage est dissymétrique, de manière à ce qu'une application de force du cliquet (15) au rochet (18) ne soit possible que suivant le sens (S) de rotation de consigne et qu'il se produise un glissement du rochet (18) sur le cliquet (15) lorsque le rochet (18) tourne, suivant le sens (S) de rotation de consigne, plus vite que le cliquet (15) et
    caractérisé en ce que
    la denture d'encliquetage du rochet (18) est une denture (17) extérieure en forme d'arc de cercle.
  2. Disjoncteur suivant la revendication 1,
    caractérisé en ce que
    l'angle de l'arc de cercle a une valeur angulaire comprise entre 160° inclus et 200° inclus.
  3. Disjoncteur suivant l'une des revendications précédentes,
    caractérisé en ce que
    - le rochet (18) est solidaire en rotation d'un arbre (30) de manoeuvre du disjoncteur,
    - le ressort (21) de l'entraînement (20) à ressort accumulateur forme un ressort de fermeture et
    - une première plage angulaire de rotation de l'arbre (30) de manoeuvre - lors d'une rotation suivant le sens (S) de rotation de consigne - sert à bander le ressort (21) et une deuxième plage angulaire de rotation de l'arbre (30) de manoeuvre - lors d'une rotation suivant le sens (S) de rotation de consigne - sert à débander le ressort (21) et à fermer le disjoncteur.
  4. Disjoncteur suivant la revendication 3,
    caractérisé en ce que
    la denture (17) extérieure en forme d'arc de cercle du rochet (18) et le cliquet (15) sont disposés l'un par rapport à l'autre de manière à ce que le cliquet (15) pénètre ou puisse pénétrer dans la denture (17) extérieure en forme d'arc de cercle lorsque l'arbre (30) de manoeuvre se trouve dans la première plage angulaire de rotation.
  5. Disjoncteur suivant l'une des revendications précédentes 3 à 4,
    caractérisé en ce que
    la denture (17) extérieure en forme d'arc de cercle du rochet (18) et le cliquet (15) sont disposés l'un par rapport à l'autre de manière à ce que le cliquet (15) soit hors de prise avec la denture (17) extérieure en forme d'arc de cercle lorsque l'arbre (30) de manoeuvre se trouve dans la deuxième plage angulaire de rotation.
  6. Disjoncteur suivant l'une des revendications précédentes,
    caractérisé en ce que
    - le dispositif (10) d'armement à la main a une bascule (12), qui peut pivoter autour d'un axe (13) fixe de bascule et à laquelle le cliquet (15) est retenu pivotant autour d'un axe (14) de pivotement, dans lequel
    - l'axe (14) de pivotement est parallèle à l'axe (13) de la bascule et, si la bascule (12) pivote autour de l'axe (13) de bascule, l'axe (14) de pivotement du cliquet (15) est tourné également autour de l'axe (13) de la bascule.
  7. Disjoncteur suivant la revendication 6,
    caractérisé en ce que
    la plage de pivotement du cliquet (15) est limitée en direction du rochet (18) au moyen d'une butée.
  8. Disjoncteur suivant l'une des revendications précédentes 4 à 5,
    caractérisé en ce que
    le dispositif (10) d'armement à la main comprend un ressort (16) de mise en position, qui produit une force de ressort sur le cliquet (15) en direction du rochet (18).
  9. Disjoncteur suivant l'une des revendications précédentes,
    caractérisé en ce que
    - une extrémité du ressort (21) de l'entraînement (20) à ressort accumulateur est fixée de manière excentrée - rapporté à l'axe de l'arbre - à l'arbre (30) de manoeuvre et
    - l'axe de rotation du rochet (18) et l'axe de l'arbre (30) de manoeuvre sont les mêmes.
  10. Disjoncteur suivant l'une des revendications précédentes,
    caractérisé en ce que
    le disjoncteur a un blocage (40) de retenue, qui empêche le rochet (18) de tourner dans le sens contraire au sens (S) de rotation de consigne.
  11. Disjoncteur suivant la revendication 10,
    caractérisé en ce que
    le blocage (40) de retenue comprend une roue (41) dentée, qui est montée coaxialement au rochet (18) en étant solidaire en rotation de l'arbre (30) de manoeuvre du disjoncteur.
EP14808929.5A 2013-12-20 2014-12-02 Disjoncteur électrique Active EP3061109B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013227004.6A DE102013227004B4 (de) 2013-12-20 2013-12-20 Elektrischer Leistungsschalter
PCT/EP2014/076199 WO2015090934A1 (fr) 2013-12-20 2014-12-02 Disjoncteur électrique

Publications (2)

Publication Number Publication Date
EP3061109A1 EP3061109A1 (fr) 2016-08-31
EP3061109B1 true EP3061109B1 (fr) 2018-02-28

Family

ID=52014058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14808929.5A Active EP3061109B1 (fr) 2013-12-20 2014-12-02 Disjoncteur électrique

Country Status (8)

Country Link
US (1) US9953788B2 (fr)
EP (1) EP3061109B1 (fr)
CN (1) CN105830186B (fr)
CA (1) CA2934372C (fr)
DE (1) DE102013227004B4 (fr)
ES (1) ES2671469T3 (fr)
MX (1) MX2016008032A (fr)
WO (1) WO2015090934A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4386798A2 (fr) * 2015-07-03 2024-06-19 General Electric Technology GmbH Unité d'entraînement pour un disjoncteur moyenne ou haute tension

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689721A (en) * 1971-09-16 1972-09-05 Westinghouse Electric Corp Circuit breaker including ratchet and pawl spring charging means and ratchet teeth damage preventing means
JPS59189519A (ja) * 1983-04-12 1984-10-27 富士電機株式会社 しや断器操作用蓄勢器の駆動装置
US4491709A (en) * 1983-05-09 1985-01-01 Square D Company Motor and blade control for high amperage molded case circuit breakers
JPS61288329A (ja) 1985-06-17 1986-12-18 三菱電機株式会社 遮断器用ばね操作装置
US5489755A (en) 1994-03-18 1996-02-06 General Electric Company Handle operator assembly for high ampere-rated circuit breaker
DE4416106A1 (de) 1994-04-20 1995-10-26 Siemens Ag Spannvorrichtung für einen Federspeicher
US5883351A (en) 1997-05-27 1999-03-16 General Electric Company Ratcheting mechanism for industrial-rated circuit breaker
DE102006006907A1 (de) 2006-02-09 2007-08-16 Siemens Ag Anordnung insbesondere zum Betätigen einer Transportklinke und Spannvorrichtung für einen Federspeicher eines elektrischen Schalters mit einer derartigen Anordnung

Also Published As

Publication number Publication date
ES2671469T3 (es) 2018-06-06
DE102013227004A1 (de) 2015-06-25
CA2934372A1 (fr) 2015-06-25
CN105830186A (zh) 2016-08-03
DE102013227004B4 (de) 2021-06-02
WO2015090934A1 (fr) 2015-06-25
MX2016008032A (es) 2016-10-12
EP3061109A1 (fr) 2016-08-31
CA2934372C (fr) 2018-07-10
CN105830186B (zh) 2018-12-21
US20160300681A1 (en) 2016-10-13
US9953788B2 (en) 2018-04-24

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